Made of imported high-alumina material, with 12 hours tempering process and falling ball test, it can bear double pressure and 10kg beat. Carry with high-level Nano technology, six hours tempering under 400 degree high temperature, for better toughness and 9H hardness. 

• Imported high-alumina material

• Anti-crush function can bear double pressure
  

• 9H hardness, extremely anti-scratch

• Oleophobic coating to prevent fingerprints
  

• Only 0.26mm thickness